Toy airplane



Oct. 19 1926. 1,603,669

D. l. DWYER TOY AIRPLANE Filed Jan. 22, 1925 IN V EN TOR.

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Patented- (lct. 19, 1926.

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DANIEL I. nwynn, or DAYTON, orrro, ASSIGNOR on ONE-HALF TO EARL A. SMITH, or DAYTQN, onro.

TOY AIRPLANE.

Application filed January My invention relates to airplanes and in particular to toy airplanes.

It is the object of my invent-ion to provide an airplane structure which is adaptable to all types of airplanes but in this particular instance I have embodied it in a toy airplane.

It is my primary object to provide main plane surfaces with a zero angle of incidence without warping surfaces and a tail structure such as stabilizers having a predeten mined angle of incidence, preferably a negative angle of incidence. These plane surfaces can be cambered or not as desired.

The main plane surfaces may also be cambered.

When I refer to stabilizers I desire to include similar structures which are sometimes termed elevators. I comprehend within stabilizers generally that transversely located surface mainly in the horizontal found at the end of the tail structure of an airplane.

It is my object to provide a toy airplane which will have cheaply constructed flat main plane surfaces and a fixed stabilizer surface with a predetermined negative angle of incidence.

Referring to the drawings:

Figure 1 is a plan view of the plane;

Figure 2 is a side elevation of the plane and Figure 3 is an isometric perspective of the tail of the plane showing the particular construction of this invention.

Referring to the drawings in detail, 1 is the backbone of the plane corresponding to the fuselage of the plane. 2 indicates a plane surface having a zero angle of incidence as it has a flat surface in a horizontal plane parallel to the plane of the backbone 1.

The forward end of the backbone 1 carries a pair of diverging ,U-shaped wires 3 connected to the backbone at 4 and 5 and extending forwardly into a skid 6, thus providing a landing gear for the plane. On the forward end of a backbone 1 is a fitting consisting of a tubular member 7 fitting over the end of the backbone and a right angle plate 8 which has an aperture for receiving the propeller shaft 9. This propeller shaft has on its forward end mounted. a propeller 10 with a rear bearing collar 11.

22, 1925. Serial No. 3,954.

The rear end of the propeller shaft 9 has connected thereto a rubber band 12 which 18 connected at its rear end to a hook 13 at the rear of the backbone 1 adjacent the tail structure.

The rear end of this backbone 1 carries a vertical rudder 1 1 and a transverse stabilizing member 15 placed at an angle to give it a negative angle of incidence to the backbone 1. A triangular shaped block 16 with its thicker end forward is placed beneath the backbone and between it and the stabilizer 15. This stabilizer may be cambered or not as desired. The stabilizer extends on either side of the backbone or fuselage member 1,.

It is understood that I desire to coinprehend within my invention such modifications as may be necessary to adapt it to varying conditions of use.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an airplane having a main plane surface and fuselage, a stabilizer surface having a negative angle of incidence, the main plane surfaces having no camber surfaces, having a zero angle of incidence, and a vertical rudder structure, said stabilizer surface being cambered.

2. In a toy airplane, a central body struc ture, a propeller mounted on one end thereof, a propeller shaft extending through a bracket on the end of said structure, a bracket, an elastic means connected to said propeller shaft, and a stationary support on said body structure, landing gear, a plane surface, and a stabilizer mounted on the body structure at a negative angle thereto and to the plane surface.

3. In a toy airplane, a central body struc ture, a propeller mounted on one end thereof, a propeller shaft extending through a bracket on the end of said structure, a bracket, an elastic means connected to said propeller shaft, a-stationary support on said body structure, landing gear, a plane surface, and a stabilizer mounted on the body structure at a negative angle thereto and to the plane surface, and a rudder surface mounted vertically on said body.

4-. In a toy airplane, a central body bar, a bracket on one end thereof, a propeller, a propeller shaft loosely mounted therein, an elastic driving means connected to said propeller shaft at one end to rotate therewith and fixed at the other end remotely on said body member, a diverging U-sliaped wire landing gear extending downwardly and forwardly on either side of said body member, a plane surface on said body member adjacent said landing gear, a vertical rudder surface on the rear end of said body member, a transverse stabilizing surface on the rear end of said body member at an angle thereto.

5. In a toy airplane, amain plane surface, a stabilizer surface, a fuselage memher, said main plane surface having a permanently fixed zero angle of incidence and said stabilizer surface having a permanently fixed negative angle of incidence whereby the rear end of the fuselage member with the stabilizer will tend to descend relatively to the plane of movement of the forward end of the fuselage member and the main plane surface whereby the plane will loop the loop.

In testimony whereof I affix my signature.

DANIEL I. DWYER. 

